Ports
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7710 SR OS Interface Configuration Guide
Automatic Protection Switching (APS)
APS is designed to protect SONET/SDH equipment from linear unidirectional or bidirectional
failures. The Network Elements (NEs) in a SONET/SDH network constantly monitor the health of
the network. When a failure is detected, the network proceeds through a coordinated predefined
sequence of steps to transfer (or switchover) live traffic to the backup facility (protection facility).
This happens very quickly to minimize lost traffic. Traffic remains on the protection facility until
the primary facility (working facility) fault is cleared, at which time the traffic may optionally be
reverted to the working facility.
Figure 8: APS Protection (Single Chassis APS) and Switchover
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Summary of Contents for 7710 SR SONET
Page 6: ...Page 6 7710 SR OS Interface Configuration Guide Table of Contents...
Page 8: ...Page 8 7710 SR OS Interface Configuration Guide List of Tables...
Page 10: ...Page 10 7710 SR OS Interface Configuration Guide List of Figures...
Page 14: ...Preface Page 14 7710 SR OS Interface Configuration Guide...
Page 16: ...Getting Started Page 16 7710 SR OS Interface Configuration Guide...
Page 18: ...Page 18 7710 SR OS Interface Configuration Guide Configuration Notes on page 107...
Page 166: ...Service Management Tasks Page 152 7710 SR OS Interface Configuration Guide...
Page 354: ...Multi Chassis Redundancy Commands Page 328 7710 SR OS Interface Configuration Guide...
Page 494: ...Standards and Protocols Page 494 Standards and Protocols...
Page 496: ...Index Page 496 7710 SR OS Interface Configuration Guide...